Not really, just play up how nihilistic he is. It doesn't require blood, swearing or lots of promo time. Just a few big gestures. Like winning a title and then giving it to the fans waiting outside the arena. Something like that would be really memorable.

"Michael McGillicutty defeated Dean Ambrose at last night's RAW live event in Topeka, Kansas. A fan in attendance noted that Ambrose does have his own entrance video and theme song." I hope his theme is actually a bit decent, as well as his titantron. Each news piece, we receive seems to indicate his debut is closer and closer...

I NEED to hear his new theme...like right now...God WWE, I hate you some times >_<

Given the crap they gave him in FCW, I wouldn't hold your breath as to him getting a good theme.
Jesus, why don't they grasp that this character probably shouldn't have generic rock riffs? He's not Hardcore Holly for fucks sake.